hheretic for the Pi4 GL version (i think)
I belive this is a GL port for Heretic. Im just going off what I find on the source page.
There is a little glitches from what i see when the demo plays. i dont know if that is the demo or what. the light i have played it seems ok for me
wget https://raw.githubusercontent.com/Exarkuniv/Hheretic-RPi/Master/hheretic.sh -P $HOME/RetroPie-Setup/scriptmodules/ports/